fix: add missing dep flatted (#3223)

Author: aladdin-add

package.json

@@ -382,6 +382,7 @@
     "di": "^0.0.1",
     "dom-serialize": "^2.2.0",
     "expand-braces": "^0.1.1",
+    "flatted": "^2.0.0",
     "glob": "^7.1.1",
     "graceful-fs": "^4.1.2",
     "http-proxy": "^1.13.0",
@@ -415,7 +416,6 @@
     "eslint-plugin-promise": "^3.4.2",
     "eslint-plugin-react": "^7.0.1",
     "eslint-plugin-standard": "^3.0.1",
-    "flatted": "^2.0.0",
     "grunt": "^1.0.0",
     "grunt-auto-release": "^0.0.7",
     "grunt-browserify": "^5.0.0",